TURBINE JUNE 2011 THE VOICE OF GENERAL AVIATION www.aopa.org PIPER MIRAGE Made for the Flight Levels p. 58 How They Stack Up TURBINE AIRCRAFT BY THE NUMBERS p. T–4 Prying Eyes REVEALING ENGINE HEALTH p. 87 Affordable Warbird: L–19 Bird Dog THIS DOG WILL HUNT p. 72 SPECIAL TURBINE SECTION INSIDE 16 PAGES OF BONUS CONTENT FOR THE TURBINE OWNER-PILOThttp://www.aopa.org